diff options
Diffstat (limited to 'qemu/roms/u-boot/board/calao/sbc35_a9g20/spi.c')
-rw-r--r-- | qemu/roms/u-boot/board/calao/sbc35_a9g20/spi.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/calao/sbc35_a9g20/spi.c b/qemu/roms/u-boot/board/calao/sbc35_a9g20/spi.c new file mode 100644 index 000000000..254c7a35d --- /dev/null +++ b/qemu/roms/u-boot/board/calao/sbc35_a9g20/spi.c @@ -0,0 +1,41 @@ +/* + * Copyright (C) 2009 + * Albin Tonnerre, Free Electrons <albin.tonnerre@free-electrons.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/hardware.h> +#include <asm/arch/at91_spi.h> +#include <asm/arch/gpio.h> +#include <spi.h> + +#define SBC_A9260_CS0_PIN AT91_PIN_PA3 +#define SBC_A9260_CS1_PIN AT91_PIN_PC11 + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + return bus == 0 && (cs == 1 || cs == 0); +} + +void spi_cs_activate(struct spi_slave *slave) +{ + if(slave->cs == 0) + at91_set_gpio_value(SBC_A9260_CS0_PIN, 0); + else if(slave->cs == 1) + at91_set_gpio_value(SBC_A9260_CS1_PIN, 0); +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + if(slave->cs == 0) + at91_set_gpio_value(SBC_A9260_CS0_PIN, 1); + else if(slave->cs == 1) + at91_set_gpio_value(SBC_A9260_CS1_PIN, 1); +} + +void spi_init_f(void) +{ + /* everything done in board_init */ +} |